alternatehistory.com

So, @Emperor Constantine has mentioned before that during his reign, William III had at different times offered to adopt James Francis Edward Stuart, otherwise known as the old pretender, as his heir. The first time he did this, he said it was conditional on James becoming Protestant, the second time, he dropped that demand. However, both times it was rejected, and history went as it did.

What I'm wondering is, what would have happened had the first offer been accepted? James is adopted by William, named as heir and converts to Anglicanism. How does this affect things within Britain, as it pertains to things with Anne and the wider political situation?
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